Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was an M3 event at 21/1530Z from Region 1618 (N09E01) associated with Type IV and II radio sweeps (estimated velocity of 1918 km/s), a 200 sfu Tenflare, and a CME. More imagery is needed to determine the trajectory, however, it is expected to be Earth-directed due to the location of the region. Region 1618 also produced an M1/1n flare at 21/0656Z associated with Type IV and II radio sweeps (estimated velocity of 720 km/s) and a CME. This CME appears to have a slight Earthward component but the majority of ejecta is directed Eastward as visible on imagery. Region 1618 developed into a beta-gamma-delta magnetic configuration. A filament eruption occurred between 20/2305Z to 21/0200Z at around N27E17 with a 14 degree heliographic extent. This filament eruption does not appear to have a CME associated with it. There are currently 5 numbered sunspot regions on the disk.

Solar activity is expected to be at moderate with a chance for high levels on days one, two, and three (22 Nov, 23 Nov, 24 Nov). Region 1618 is expected to produce M-class flares. A chance for an isolated X-class flare exists for this region.

The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 488 km/s at 21/0307Z. Total IMF reached 7 nT at 20/2228Z. The maximum southward component of Bz reached -6.4 nT at 20/2350Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 857 pfu.

The geomagnetic field is expected to be at quiet to unsettled levels on day one (22 Nov). On day two (23 Nov) conditions are expected to increase to unsettled to minor storm levels with a chance for major storm levels due to the arrival of 21 and 22 Nov CMEs. Conditions are expected to decrease to unsettled to active with a chance for minor storm levels on day three (24 Nov) with CME effects combined with a favorably positioned coronal hole. A chance for a proton event exists on days one, two, and three (22 Nov, 23 Nov, 24 Nov) due to a chance of high solar flare activity and a favorable position of Region 1618.

  觀測的       21 Nov 140
  預測的   22 Nov-24 Nov 140/135/135
  90天平均值        21 Nov 122

  觀測的 Afr/Ap 20 Nov  010/013
  估算值     Afr/Ap 21 Nov  007/008
  預測的    Afr/Ap 22 Nov-24 Nov  010/012-023/030-014/020